.author-div{
  text-align: center;
}
.author-div div{
  margin-bottom: 1rem;
}
.author-introduction{
  font-size:.8rem;
  color: #999;
}
.account{
  background-color: #999;
  margin-left: 0.5rem;
  margin-right: 0.5rem;
  cursor: pointer;
}
.account:hover{
  background-color: #1e90ff;
}